Biotechnology is probably the only industry, except agriculture, wherein the relationship between biodiversity and the wealth that it generates is so explicit. Biodiversity is the variety of organisms, their genetic variation, and the variability of associations that these organisms display spatially. Biotechnology is the harnessing of living organisms and/or their components to undertake specific processes and/or generate useful products. The modern industry is a product of the 1980s and relies heavily on genetic manipulation (commonly referred to as ‘engineering’). It has many applications, the most important sectors being in medicine, agriculture, and the environment, where it can be involved in resource recovery, recycling, and pollution abatement.

The focus of the Convention on Biological Diversity on conservation, the sustainable use of the greatest possible diversity of biota, and the equitable sharing of the benefits derived therefrom, has broadened the opportunities and responsibilities of a range of entities that are involved with conservation. Countries seeking to market their genetic resources, as well as firms seeking access to these materials, are uncertain as to how to proceed under the new expectations brought about by the Convention, and the excitement stemming from prospecting revenues is having an unfortunate side-effect in emphasizing the perceived newness of this opportunity. The continued emphasis on newness discourages participation until a less risky standard practice emerges.

Although many publications have appeared in recent years purporting to address the economics of conservation of biodiversity, most do not address the diversity issues as such. This shortcoming appears only to have been recognized recently. Furthermore, from the literature it is clear that natural living areas — apart from conserving biodiversity — jointly give rise to other conservation benefits, and therefore, their conservation needs to be evaluated holistically.

It is suggested that when constraints are placed on available resources for biodiversity conservation, some criteria for species preservation such as those associated with SMS (safe minimum standard) may exhibit unsatisfactory features. While imperfection of knowledge is a serious limitation on rational decision-making about conservation of biodiversity, we have some knowledge and we may be able to use that to determine rational probabilities. In addition, it is important to scrutinize ecological claims about biodiversity. For example, ecosystems containing greater biodiversity may not be more sustainable than those with less diversity. It is also argued that the SMS criterion needs further development because there may be no standard which ensures the survival of any species.

Due to the existence of entropy, exhaustible resources, and resource scarcity, the condition of sustainability as currently conceived seems unlikely ever to be achieved. Nevertheless, Humankind can ensure advancement towards ecologically sustainable development, thereby prolonging the existence of social and ecological stability, by encouraging the proposed inter generational and intra generational equity requirements. The intra generational condition of ensuring equitable access to resources within the current generation will be likely to be a prerequisite to achieving successfully the other equity requirements. A limited time-frame — in which any one generation would only be responsible for meeting the needs of the current generation, and passing to the next generation the resource stocks that they themselves had inherited, or more if possible — has also been proposed to make the pursuit of sustainability a more concrete task, and one that should be more manageable from a policy perspective.

Estimates of the rate and extent of tropical deforestation differ widely. The accuracy of the estimates for many countries has improved greatly during the last decade, especially with increased use of satellite data and advancements in analysis techniques. A good basis for ongoing global monitoring of tropical forests has been established by the FAO in its Forest Resources Assessment for 1990 (though data for some countries are still inadequate). The FAO assessment estimates that over one million km2 of the Earth's tropical rain-forest and moist deciduous forest was destroyed during 1981–90, representing an annual deforestation rate of 0.75% of such forests throughout the decade.

This paper traces the controversy over measurements of deforestation in Brazil's Legal Amazon and the resulting confusion and exaggeration of research findings (in both directions). Some widely-cited estimates are highly inaccurate, indicating a need for critical evaluation of any estimates that are used. A substantial narrowing of the range of estimates is found in recent studies. Landsat data indicate that the deforestation rate in the Legal Amazon declined considerably from 1988 to 1991.

Economic and social problems facing many developing countries jeopardize the effectiveness and very existence of their national parks and protected areas. Rural poverty exacerbates the need for access to natural resources in protected areas and increases public conflict with protected-area management. A prerequisite for the long-term sustainability of parks and protected areas is public involvement and support for the conservation of natural resources.

Towards the above ends, the present study analyses local residents' attitudes, knowledge, and concept of values concerning conservation and the management of natural resources in Machalilla National Park, Ecuador. A survey was administered of 90 households in three villages located within the Park boundaries and two villages adjacent to the Park. Survey results indicated that local residents living either within or adjacent to Machalilla National Park hold a variety of negative attitudes towards the Park. Positive attitudes tended to increase with respondents' level of education (X2 = 19.001, df = 2, p < 0.0001) and knowledge about conservation issues (X2 = 26.616, df = 1, p < 0.0001). Younger residents (X2 = 12.960, df = 2, p = 0.002), respondents perceiving benefits from the Park (X2 = 14.292, df = 2, p = 0.001), and respondents reporting good relations with the Park staff (X2 = 5.514, df = 1, p = 0.019), were more positive towards the Park. Factors influencing public attitudes are compared with study results in other countries.

We estimate that roughly one-third of Gaoligongshan's total area is now devoted exclusively to agriculture and other uses that preclude maintenance of biodiversity. In most cases, primary forests existing at the establishment of the three Nature Reserves have been conserved effectively. However, small-scale (but largely unmonitored and uncontrolled) tree-felling and other vegetation disturbance continues in many areas. Despite these lapses, forests are in better condition within, than outside of, established Nature Reserves. As well, the future for these forests looks brighter than for those surviving outside Reserves: at the very least, county governments are not free to convert them into pine plantations.

In contrast, hunting has been reduced only slightly — much less effectively than forest cutting has been. Although it is possible to find evidence of persistence of some rare animal species, and some Nature Reserve personnel believe there are indications that sensitive and rare species are showing an upward trend, poaching of animals is still common, particularly of smaller-bodied or lesser-known species. Although it seems well established that wellknown species (e.g. Takin) must be strictly protected, many species at equal or greater risk of extirpation and equally protected legally (e.g. some species of pheasants), do not enjoy such effective protection.